Light bulb with glass envelope having light transmission of a wa

Details Light bulb with glass envelope having light transmission of a wa Light bulb with glass envelope having light transmission of a wa

1995-03-08

1997-11-11

O'Shea, Sandra L.

Electric lamp and discharge devices

Cathode ray tube

Envelope

313493, 313634, H01J 6138

Patent

active

056867867

ABSTRACT:
A light bulb that is suitable for use in conjunction with night vision equipment has an incandescent filament enclosed in a glass envelope that transmits substantially no detectable amount of light of a wave length greater than 700 nanometers.

REFERENCES:
patent: 5539628 (1996-07-01), Seib

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